William briggs



(No Model.)

W BRIGGS Apparatus for Feeding Nail Machines.

' Patented Dec; 21; 1880.

Inve nZ'o r NITED STATES WILLIAM BBIGGS, OF MONTREAL, QUEBEU, CANADA.

APPARATUS FOR FEEDING NAIL-MACHINES.

SPECIFICATION forming part of Letters Patent No. 235,667, dated December21, 1880. Application filed October 25, 1880. (No model.) Patented inCanada December 13, 1879.

T 0 all whom it may concern:

Be it known that I, WILLIAM BRIGGS, of the city and District ofMontreal, Province of Quebec, Canada, have invented certain new anduseful Improvements in Apparatus for Feeding Nail-Machines; and I dohereby declare that the following is a full, clear, and exactdescriptionof the same.

This invention has reference, first, to the construction and arrangementof a feeding apparatus so arranged in its action that the parts employedto hold the plate from which the nails are to be cut will turn over andpresent the plate to be cut and then remain stationaryasufficient periodof time for the operation of cutting to be fully performed, when itagain turns over and acts in a similar way.

The second part of my invention consists in the construction andarrangement of the jaws employed for holding and guiding the said platefrom which the nails are out.

In the drawings hereunto annexed similar letters of reference indicatelike parts, and Figure 1 is a side elevation of a machine embodying myinvention. Fig. 2 is a plan of Fig. 1. Figs. 3, 4, 5, and 6 are detailsof jaws. Fig. 7 is a front view of part of the plate-turnin g apparatus.

Letter A is any suitable frame-work for holdin g the working partsofanail-cuttin g machine,

which said parts are not shown, as they form no part of the presentinvention. B are the plumber-blocks for holding the main shaft. 0 arethe blocks to which the cutting-jaw is attached, and D is the rest forholding the beddie for cutting the nails. All the above are constructed(and the part of them that is not shown in the drawings) in a similarmanner as heretofore in use.

To the front of the frame A are attached two brackets, E, carrying ashaft, F, which is free to revolve in the bearings G at the ends of thebrackets.

On the shaft Fis secured an arm, H, to which is attached a plate, I, ofthe form shown in the drawings, upon which two plumber-blocks, K, aresecured. In these a rotating barrel, L, is held.

A slide is provided, working on the plate I, which slide consists ofthree bars and an end piece connecting them: the top bar, M, passesguide, and the bar Q. I do not confine myself I to this construction ofthe slide, as many others may equally well answer the purpose of causingthe barrel to turn half round and back again. The back end of the barrelL is constructed with a taper point, and, although not shown in thedrawings, a mechanism is provided for feeding forward the nail-plateplaced in the barrel L. This said mechanism is of similar constructionto that at present in use, and I would state that all that has beenhereinbefore mentioned or partly described is old and similar to whathas heretofore been in use.

On the side of the plumber-blocks B are secured two bearings, a,carrying a shaft, 1), provided with a gear-wheel, 0, so arranged with agear on the main shaft carried in the blocks B that the shaft b makesone revolution to two revolutions of said main shaft.

On the extremity of the shaft 1), as shown, a crank, d, is secured. To acrank-pin on said crank is attached a connecting-rod, c, to the otherextremity of which is attached a rack, f, carried in a guiding-block, g,so that as the crank d revolves the rack f moves backward and forward.In the guiding-block g is also held a pinion, (not shown in the drawingsbecause it is contained within the guiding-block g, having axle h, whichh will be understood to include said pinion,) arranged to make half arevolution at each stroke of the rack f.

To the axle h, passing up through the upper side of the block g, andupon said axle, is attached a crank, 5. To this crank is attached aconnecting-rod, k, connecting with the bar Q so that by the revolutionof the crank 01, oper tions q of the slide 1".

setting the parts 01, e,f, h, i, and 7c so that the crank 11 shall be onthe dead-center with regard to the rackf when the cranki is 011 thedeadcenter with regard to the slide M, and inasmuch as in all the movingparts of all ordinary machines there must be an amountof slack or lostmotion, therefore, by reason of said slack or lost motion, conjointlywith the fact of setting the two cranks d and t' on their dead-centersat the same time, a considerable pause in the motion of the barrel L iscaused each time it turns over, and these pauses arearranged or timed bythe setting of the parts of the ma chine to occur when the cutting ofi'of the nail takes place.

The second part of myinvention consists in the-construction andarrangement of the guiding-jaws. (Shown more fully in Figs. 3, 4, 5, and6.)

Fig. 4 shows a plan of the upper inclined surface of the rear part ofthe barrel L. Two arms, m, are attached to it by pivots at. These armsextend forward and engage with projec- The slide 1 consists of a slottedlink, so arranged with the said projections q, and acting upon the armsm, having the configuration shown, that they cause the rear ends of thearms to be adjusted in distance apart or from each other to agree withthe width of plate from which the nails are to be cut by the setting ofthe slide 1", which is secured by means of any suitable set-screw orsimilar device, S. As shown in Figs. 4 and 6, (Fig. 6 is a section online or 00, Fig. 4,) the arms on are provided with side flanges, t.

On the incline under that upon which the arms m are situated is secureda plate, M. The lower side of this plate is shown in plan in Fig. 3,andthe upper side in planin Fig. 5, bywhich it will be seen that twoprojections, b are provided, and by looking at Fig. 6 the object of"these projections becomes at once apparent.

What I claim and wish to secure by Letters Patent, is as follows:

1. In combination with the barrel L, a rack or similar device forrevolving said barrel, operated by a crank, i, which is, in turn,operated by a crank, d, arranged to have the (leadcenters of said cranksset substantially as described, for the purposes set forth.

2. The combination of the crank 0?, connecting-rod e, rack f, pinion andaxle It, crank 11, connecting-rod 76, and barrel L, substantially as andfor the purposes set forth.

8. The combination of the barrel L withjaws m, constructed and arrangedsubstantially as described, and provided with plate (0 constructed andarranged substantially as described, for the purposes set forth.

W. BRIGGS.

Witnesses CHARLES G. U. SIMPsoN, W. E. FUDGER.

